CVE-2026-91921
Cross-Site Scripting (XSS) vulnerability due to inadequate input sanitisation in the client-side rendering engine of the 1millionbot AI Chat
CVSS
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No CVSS
EPSS
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KEV
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Exploit Today
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0-100
Published: Sep 21, 2026 · Last modified: Sep 21, 2026 · CWE-79
Not enough EPSS history yet.
Cross-Site Scripting (XSS) vulnerability due to inadequate input sanitisation in the client-side rendering engine of the 1millionbot AI Chat Platform. An unauthenticated remote user could cause external hyperlinks to be rendered in the web interface by sending messages containing Markdown syntax and certain unsanitised content blocks. The impact is limited to the user’s own interactive session; no compromise of internal infrastructure, access to third-party data or impact on administrative panels has been identified.
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-94373——
———MISP contains a DOM-based cross-site scripting (XSS) vulnerability in the contextual menu JavaScript component. The ContextualMenu class populates HTML <option> elements by assigning user-controllable values to the innerHTML property. Because innerHTML parses and renders HTML markup, any untrusted string supplied as the option text (value.text or value) is interpreted as live DOM content rather than plain text. An attacker who can influence the data rendered in the contextual menu can inject arbitrary HTML or JavaScript that executes in the victim's browser within the MISP application origin. This may allow session hijacking, data exfiltration, or unauthorized actions performed on behalf of the authenticated user.
Version affected: <2.5.471hCVE-2026-94372——
———MISP contains a stored cross-site scripting (XSS) vulnerability in the default theme's Galaxies index page. When a MISP instance detects unknown custom or default galaxy clusters during synchronization, it renders sample tag names in an informational notice directed at site administrators. In the default theme, these sample tag names were inserted into the HTML output without HTML-entity encoding. A user with tag-editor privileges could craft a malicious misp-galaxy tag containing arbitrary script. When a site administrator subsequently viewed the Galaxies index page, the crafted tag content was interpreted as executable markup in the administrator's browser session, enabling the attacker to read session data, perform actions on behalf of the administrator, or otherwise compromise the administrator's browser context. The Overmind theme already applied HTML escaping to the same values and was not affected. The vulnerability requires the attacker to possess tag-editor-level access to create the crafted tag and requires the victim (a site administrator) to view the Galaxies index page in the default theme. The impact is limited to the administrator's browser session and does not directly compromise the MISP server process.
Version affected: <2.5.471hCVE-2026-942112.4 LOW—
———A vulnerability has been found in Hyve5 Leantime up to 3.9.8. Affected by this issue is some unknown functionality of the file /app/Domain/Dashboard/Templates/show.blade.php of the component Project Dashboard. Such manipulation leads to cross site scripting. The attack may be performed from remote. The exploit has been disclosed to the public and may be used. "EDIT perm" needed to plant; fires cross-user for anyone viewing the project dashboard since the poisoned label name is echoed raw. The vendor was contacted early about this disclosure but did not respond in any way.1hCVE-2026-942103.5 LOW—
———A flaw has been found in Hyve5 Leantime up to 3.9.8. Affected by this vulnerability is the function getAllGrouped of the file app/Domain/Tickets/Services/Tickets.php of the component Kanban Board. This manipulation causes cross site scripting. The attack is possible to be carried out remotely. The exploit has been published and may be used. Patch name: a30a6837b4071ac05a4f58d0e1baa2c62aa8695e. To fix this issue, it is recommended to deploy a patch.2hCVE-2026-94277——
———MISP's galaxy matrix statistics view (app/View/Users/statistics_galaxymatrix.ctp) renders the galaxy name directly into HTML output via sprintf() without any HTML encoding. An authenticated user holding the perm_galaxy_editor permission can create or modify a galaxy whose name contains arbitrary HTML or JavaScript markup. Because the value is interpolated verbatim into the page, any user who subsequently opens the galaxy matrix statistics page will have the embedded script executed in their browser context. This enables session hijacking, credential theft, data exfiltration, or the performance of arbitrary actions on behalf of the victim within the MISP application.
Version affected: <2.5.472hCVE-2026-941502.4 LOW—
———A security flaw has been discovered in Omega Solution HRM OS up to 20260717. The impacted element is an unknown function of the file /media/view/ of the component SVG File Upload. Performing a manipulation results in cross site scripting. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.1h